DK1495067T3 - A Method for Radiation Treatment of Ethylene Polymers - Google Patents

A Method for Radiation Treatment of Ethylene Polymers

Info

Publication number
DK1495067T3
DK1495067T3 DK03723549T DK03723549T DK1495067T3 DK 1495067 T3 DK1495067 T3 DK 1495067T3 DK 03723549 T DK03723549 T DK 03723549T DK 03723549 T DK03723549 T DK 03723549T DK 1495067 T3 DK1495067 T3 DK 1495067T3
Authority
DK
Denmark
Prior art keywords
ethylene
polymer
kpa
ethylene polymer
radiation treatment
Prior art date
Application number
DK03723549T
Other languages
Danish (da)
Inventor
Carl-Gustaf Ek
Mats Baeckman
Hans-Bertil Martinsson
Original Assignee
Borealis Tech Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borealis Tech Oy filed Critical Borealis Tech Oy
Application granted granted Critical
Publication of DK1495067T3 publication Critical patent/DK1495067T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/08—Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Toxicology (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

A process for radiation treatment of ethylene polymers is described. The process is characterised in that a multimodal ethylene polymer is provided; the polymer is melt homogenised/compounded; the homogenised polymer is irradiated as a solid with electron beam irradiation to increase the complex viscosity at 2.7 kPa complex modulus, eta* (G*=2.7 kPa), determined according to ASTM D 4440-95a. Preferably, the multimodal ethylene polymer is a bimodal ethylene polymer, and more preferably it comprises a low molecular weight (LMW) ethylene homopolymer fraction and a high molecular weight (HMW) ethylene copolymer fraction. Preferably, the ethylene polymer is irradiated until it reaches a complex viscosity at 2.7 kPa complex modulus of 10-5000 kPa.s. The radiation dose when irradiating the ethylene polymer is preferably within the range 0.1-20 kGy.
DK03723549T 2002-04-18 2003-04-17 A Method for Radiation Treatment of Ethylene Polymers DK1495067T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0201173A SE0201173L (en) 2002-04-18 2002-04-18 Process for Radiation Treatment of Ethylene Polymers
PCT/SE2003/000623 WO2003087199A1 (en) 2002-04-18 2003-04-17 A process for radiation treatment of ethylene polymers

Publications (1)

Publication Number Publication Date
DK1495067T3 true DK1495067T3 (en) 2007-10-08

Family

ID=20287612

Family Applications (1)

Application Number Title Priority Date Filing Date
DK03723549T DK1495067T3 (en) 2002-04-18 2003-04-17 A Method for Radiation Treatment of Ethylene Polymers

Country Status (8)

Country Link
EP (1) EP1495067B1 (en)
AT (1) ATE363507T1 (en)
AU (1) AU2003230479A1 (en)
DE (1) DE60314114T2 (en)
DK (1) DK1495067T3 (en)
ES (1) ES2287472T3 (en)
SE (1) SE0201173L (en)
WO (1) WO2003087199A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL1655335T3 (en) * 2004-11-03 2007-04-30 Borealis Tech Oy Polymer composition for injection molding
EP2740761B1 (en) * 2012-12-05 2016-10-19 Borealis AG Polyethylene composition with improved balance of slow crack growth resistance, impact performance and pipe pressure resistance for pipe applications

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563870A (en) * 1969-01-23 1971-02-16 Dow Chemical Co Melt strength and melt extensibility of irradiated linear polyethylene
CA1142883A (en) * 1980-09-04 1983-03-15 George White Process for irradiation of polyethylene
US4586995A (en) * 1982-09-17 1986-05-06 Phillips Petroleum Company Polymer and irradiation treatment method
US4598128A (en) * 1983-03-14 1986-07-01 Phillips Petroleum Company Polymer composition and preparation method
US5508319A (en) * 1991-06-21 1996-04-16 Montell North America Inc. High melt strength, ethylene polymer, process for making it, and use thereof
FI108452B (en) * 1996-06-07 2002-01-31 Borealis Polymers Oy Ethylene polymer product with a broad molar mass distribution, production and use thereof
EP0958323B1 (en) * 1997-02-07 2003-07-02 ExxonMobil Chemical Patents Inc. Improved processing olefin copolymers
US6103807A (en) * 1998-03-19 2000-08-15 Solvay Polyolefins Europe-Belgium (Societe Anonyme) Ethylene-polymer-based composition, process for obtaining and using same
ATE282052T1 (en) * 1998-04-06 2004-11-15 Borealis Tech Oy HIGH DENSITY POLYETHYLENE COMPOSITIONS, A METHOD FOR THE PRODUCTION THEREOF AND FILMS PRODUCED THEREFROM

Also Published As

Publication number Publication date
ES2287472T3 (en) 2007-12-16
SE0201173L (en) 2003-10-19
DE60314114D1 (en) 2007-07-12
EP1495067A1 (en) 2005-01-12
DE60314114T2 (en) 2008-01-24
ATE363507T1 (en) 2007-06-15
SE0201173D0 (en) 2002-04-18
EP1495067B1 (en) 2007-05-30
WO2003087199A1 (en) 2003-10-23
AU2003230479A1 (en) 2003-10-27

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